One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,7)(3,11,13,8)(4,14,15,9)(5,10,16,12)(17,18,23,26)(19,24,30,32)(20,25,28,29)(21,31,27,22)(33,34)(35,42)(36,45)(37,40)(38,44)(39,41)(43,47)(46,48)(2,7)(4,15)(8,11)(10,12)(17,19)(18,24)(20,21)(22,29)(23,30)(25,31)(26,32)(27,28)(33,35)(34,38)(36,46)(37,43)(39,44)(40,48)(41,42)(45,47) involution — undirected(17,20)(18,25)(19,27)(21,30)(22,24)(23,28)(26,29)(31,32)(33,36,39,37)(34,40,41,45)(35,43,44,46)(38,47,42,48)(1,3)(2,8)(4,10)(5,14)(6,13)(7,11)(9,16)(12,15)(17,20)(18,25)(19,21)(22,32)(23,28)(24,31)(26,29)(27,30)(33,35)(34,38)(36,43)(37,46)(39,44)(40,47)(41,42)(45,48) involution — undirected(1,4,6,15)(2,9,7,14)(3,12,13,10)(5,11,16,8)(17,21)(18,22)(19,28)(20,30)(23,27)(24,25)(26,31)(29,32)(33,37,39,36)(34,40,41,45)(35,43,44,46)(38,48,42,47)(1,5)(2,10)(3,9)(4,11)(6,16)(7,12)(8,15)(13,14)(17,22)(18,21)(19,29)(20,24)(23,31)(25,30)(26,27)(28,32)(33,38)(34,35)(36,47)(37,48)(39,42)(40,43)(41,44)(45,46) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.