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