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