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