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