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