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