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