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