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