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)(17,18,23,24)(19,25,20,30)(21,22,27,26)(28,29,31,32)(33,34,39,43)(35,40,44,48)(36,38,42,47)(37,46,45,41)(2,7)(3,10)(9,12)(11,16)(18,24)(21,27)(25,30)(28,31)(35,44)(37,45)(40,48)(41,46) involution — undirected(1,3)(2,8)(4,11)(5,7)(6,10)(9,15)(12,13)(14,16)(17,19,23,20)(18,25,24,30)(21,28,27,31)(22,29,26,32)(33,35,39,44)(34,40,43,48)(36,45,42,37)(38,41,47,46)(1,3)(2,8)(4,11)(5,7)(6,10)(9,15)(12,13)(14,16)(17,20,23,19)(18,25,24,30)(21,31,27,28)(22,29,26,32)(33,36)(34,38)(35,45)(37,44)(39,42)(40,41)(43,47)(46,48)(1,4,6,14)(2,9,7,12)(3,11,10,16)(5,13,8,15)(17,21,23,27)(18,26,24,22)(19,28,20,31)(25,32,30,29)(33,37,39,45)(34,41,43,46)(35,36,44,42)(38,40,47,48)(1,5,6,8)(2,3,7,10)(4,13,14,15)(9,11,12,16)(17,22,23,26)(18,27,24,21)(19,29,20,32)(25,31,30,28)(33,38)(34,42)(35,41)(36,43)(37,40)(39,47)(44,46)(45,48)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.