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