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