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