One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,3)(4,7,11,9)(5,10,13,8)(12,15,16,14)(17,18,23,24)(19,22,20,27)(21,25,29,32)(26,31,28,30)(33,34)(35,38)(36,39)(37,40)(41,45)(42,46)(43,47)(44,48)(4,11)(7,9)(12,16)(14,15)(17,19)(18,22)(20,23)(21,28)(24,27)(25,30)(26,29)(31,32)(33,34,37,40)(35,38,42,46)(36,39,44,48)(41,45,43,47)(2,3)(7,9)(8,10)(14,15)(18,24)(19,20)(21,29)(30,31)(33,35,37,42)(34,38,40,46)(36,41,44,43)(39,45,48,47)(1,3,6,2)(4,9,11,7)(5,10,13,8)(12,15,16,14)(17,20,23,19)(18,22,24,27)(21,28,29,26)(25,31,32,30)(33,34)(35,38)(36,39)(37,40)(41,45)(42,46)(43,47)(44,48)(1,4)(2,7)(3,9)(5,12)(6,11)(8,14)(10,15)(13,16)(17,21)(18,25)(19,26)(20,28)(22,31)(23,29)(24,32)(27,30)(33,35)(34,38)(36,43)(37,42)(39,47)(40,46)(41,44)(45,48) involution — undirected(1,5)(2,8)(3,10)(4,12)(6,13)(7,14)(9,15)(11,16)(17,22)(18,19)(20,24)(21,30)(23,27)(25,28)(26,32)(29,31)(33,36)(34,39)(35,41)(37,44)(38,45)(40,48)(42,43)(46,47) 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.