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