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