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