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