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